<?php

namespace app\common\service;

use support\exception\BusinessException;
use support\Log;
use support\Request;

class UploadService
{

    /**
     * 从服务器本地路径上传文件到 OSS
     *
     * @param Request $request
     * - path: 本地文件绝对路径
     * - scene: 业务分区/场景
     * - category: 文件分类（可选）
     * - original_name: 原始文件名（可选）
     */
    public function uploadLocalFile($param)
    {
        try {
            $filePath = $param['path'];
            $scene = $param['scene'];
            $category = $param['category']??'general';
            $providedOriginalName = $param['original_name']??'';

            if (empty($filePath)) {
                Log::error('本地文件路径不能为空',$param);
                throw new BusinessException('本地文件路径不能为空');
            }

            if (!file_exists($filePath) || !is_readable($filePath)) {
                Log::error('本地文件不存在或不可读',$param);
                throw new BusinessException('本地文件不存在或不可读');
            }
            if (empty($scene)) {
                Log::error('上传场景不能为空',$param);
                throw new BusinessException('上传场景不能为空');
            }

            $basename = basename($filePath);
            $originalName = $providedOriginalName ?: $basename;
            $extensionFromName = pathinfo($originalName, PATHINFO_EXTENSION);
            $extensionFromPath = pathinfo($basename, PATHINFO_EXTENSION);
            $extension = $extensionFromName ?: $extensionFromPath;

            $mime = mime_content_type($filePath) ?: 'application/octet-stream';
            $size = filesize($filePath) ?: 0;

            $sceneUrl = $scene ? ($scene . '/') : '';
            $dir = 'x_server/' . $sceneUrl . date('Ymd') . '/';
            $uniqueName = md5($originalName . microtime(true));
            $objectKey = $dir . $uniqueName . ($extension ? ('.' . $extension) : '');

            $ossService = new OssService();
            $ossService->uploadImage($filePath, $objectKey);
            $privateUrl = $ossService->generatePrivateUrl($objectKey);

            // 记录文件信息到数据库
            $uploadedFilesService = new UploadedFilesService();
            $fileInfo = [
                'file_name' => basename($objectKey),
                'file_path' => $objectKey,
                'file_size' => $size,
                'file_type' => $mime,
                'original_name' => $originalName,
            ];
            $recordResult = $uploadedFilesService->recordFileInfo($fileInfo, null, $scene, $category);

            $data = [
                'original_name' => $originalName,
                'file_name' => $objectKey,
                'file_url' => $privateUrl,
                'file_id' => $recordResult['id'] ?? null,
                'partition' => $scene,
                'category' => $category,
            ];

            return $data;
        } catch (\Throwable $e) {
            Log::error($e->getMessage(),$param);
            throw new BusinessException($e->getMessage());
        }
    }

    /**
     * 删除 OSS 上的文件
     *
     * @param array $param
     * - object_key: OSS 对象键名-oss路径（必需）
     * - file_id: 数据库文件记录ID（可选，用于删除数据库记录）
     * @return bool 删除是否成功
     *
     * 示例
     * $uploadService = new UploadService();
     *
     * 只删除 OSS 文件
     * $uploadService->deleteOssFile([
     * 'object_key' => 'vehicle_album/documents/20241201/abc123.pdf'
     * ]);
     *
     * 同时删除 OSS 文件和数据库记录
     * $uploadService->deleteOssFile([
     * 'object_key' => 'vehicle_album/images/20241201/abc123.jpg',
     * 'file_id' => 123
     * ]);
     */
    public function deleteOssFile($objectKey,$fileId = null)
    {
        try {

            if (empty($objectKey)) {
                Log::error('OSS对象键名不能为空', $objectKey);
                throw new BusinessException('OSS对象键名不能为空');
            }

            $uploadedFilesService = new UploadedFilesService();
            // 如果提供了文件ID，同时删除数据库记录
            if ($fileId) {
                $uploadedFilesService->deleteFile($fileId);
            }else{
                $uploadedFilesService = new UploadedFilesService();
                if (empty($fileId)) {
                    $where = ['file_path' => $objectKey];
                    $file = $uploadedFilesService->getFile($where);
                    $fileId = $file->id;
                }
                if(!empty($fileId)){
                    $uploadedFilesService->deleteFile($fileId);
                }
            }

            // 删除 OSS 上的文件
            $ossService = new OssService();
            $ossService->deleteFile($objectKey);

            Log::info('OSS文件删除成功', ['object_key' => $objectKey, 'file_id' => $fileId]);
            return true;
        } catch (\Throwable $e) {
            Log::error('删除OSS文件失败: ' . $e->getMessage());
            throw new BusinessException('删除OSS文件失败: ' . $e->getMessage());
        }
    }
}